Anionic surfactant for the dispersion of the asphaltenes in porous media

Benayada, B.; Rahmani, Zeinab

doi:10.1016/s0306-2619(99)00048-3

Cited by 7 publications

(2 citation statements)

References 3 publications

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“…Some alkanes or alkylbenzenesulfonates with appropriate hydrophobic groups are typical asphaltene dispersants as a result of the exceptional surface activity. − The effects of various sulfonates on the properties of asphaltenes have been reported in the literature, − in terms of solubility, ζ potential, electrophoretic mobility, dispersity, etc., which exert influence on the colloidal stability of asphaltene in the oil system directly or indirectly. The interaction between sulfonate and asphaltene could change the behaviors of coke formation in petroleum processing.…”

Section: Introductionmentioning

confidence: 99%

Effects of Iron(III) Dodecylbenzenesulfonate on the Slurry-Phase Hydrocracking of Venezuela Fuel Oil with an Oil-Soluble Mo Catalyst

Yang

Deng

et al. 2016

Energy Fuels

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The coke formation, liquid product distribution, alterations in catalytic active sites, and variations of residue colloidal stability were analyzed to investigate the additive effect of iron(III) dodecylbenzenesulfonate (IDBS) with an oil-soluble Mo catalyst in slurry-phase hydrocracking of Venezuela fuel oil (VFO). Experiments demonstrated that IDBS as well as polyoxyethylenesorbitan monooleate (Tween 80) and sodium dodecylbenzenesulfonate (SDBS) for comparison could separately promote the amount of suspended coke and reduce the sedimentary coke on the surface of the reactor, while changes in total coke were minor. In the presence of the Mo catalyst, IDBS showed a significant synergy effect with the Mo catalyst on mitigating the coke formation in contrast to Tween 80 and SDBS. The sulfidity of the Mo catalyst and catalytic active centers for hydrogenation were facilitated using IDBS, according to the analyses of the X-ray fluorescence (XRF) determination and X-ray diffraction (XRD) spectroscopy. In addition, analyses of saturate, aromatic, resin, and asphaltene (SARA) composition, collodial stability parameter (CSP), and coking inducing period, together with Fourier transform infrared (FTIR) spectroscopy, indicated the improvement of colloidal stability when IDBS was added. Micromorphology and sizes of coke were compared via scanning electron microscopy (SEM) and laser particle size analysis (LPSA), respectively, confirming that the synergism between IDBS and the Mo catalyst decreased the total coke and improved the dispersity of coke in slurry-phase hydrocracking.

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Section: Introductionmentioning

confidence: 99%

Effects of Iron(III) Dodecylbenzenesulfonate on the Slurry-Phase Hydrocracking of Venezuela Fuel Oil with an Oil-Soluble Mo Catalyst

Yang

Deng

et al. 2016

Energy Fuels

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“…Asphaltene inhibitors are typically amphiphilic surfactant or dispersant-type molecules. Reported inhibitors include mono-substituted esters of glycerol (Breen, 2001), esters of sorbitan (Spans) (Breen, 2001), alkylamines (Subramanian et al, 2018b), alkylphenols (Chang and Fogler, 1994;Goual et al, 2014;Rogel and León, 2001;Wei et al, 2015), alkylbenzene sulfonates such as dodecylbenzyl sulfonic acid (Benayada and Rahmani, 1999;Chang and Fogler, 1994;Goual and Sedghi, 2015;León et al, 1999;Liu et al, 2015;Wei et al, 2015) and polymeric dispersants such as polyisobutylene succinimides (PIBS) (Breen, 2001;Hashmi et al, 2010;Manek and Sawhney, 1996;Marques et al, 2012;Wang et al, 2017). It has been theorised that resins, which are naturally occurring in crude oil, can stabilise asphaltenes (Acevedo et al, 1995;Kawanaka et al, 1989;Leontaritis and Mansoori, 1987;Pfeiffer and Saal, 1939;Porte et al, 2003;Soorghali et al, 2014), hence chemists may look to utilise these chemistries by finding synthetic analogues or by recycling / reintroducing natural resins (Khvostichenko and Andersen, 2010;Speight, 2004).…”

Section: Introductionmentioning

confidence: 99%

Mechanism of an asphaltene inhibitor in different depositing environments: Influence of colloid stability

Campen

Moorhouse

Wong

2020

Journal of Petroleum Science and Engineering

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Additives are used to reduce unwanted carbonaceous deposits of asphaltenes on surfaces during petroleum production from natural oil and gas reservoirs. The working mechanism of formulated additive packages can be multifaceted. Additives may be effective in the bulk fluid by preventing asphaltenes aggregation, as well as at the surface by preventing asphaltenes adhesion. In this paper, we investigate the numerous different mechanisms by which an asphaltene inhibitor can interfere with the formation of carbonaceous deposits using a combination of techniques including dynamic light scattering to determine particle size distribution, quartz crystal microbalance with dissipation monitoring to examine deposition behaviour and atomic force microscopy to probe deposit morphology. The tested inhibitor prevents deposition of asphaltenes in toluene, where asphaltenes exist as a stable colloidal dispersion of nanoaggregates, by forming barrier-type films that inhibit asphaltenes adhesion and displacing adsorbed thin films of asphaltenes. However, inhibitor performance in heptane-toluene, where asphaltenes are destabilised, depends on the degree of destabilisation. At low heptane volume fraction, inhibitor slows the rate of deposition and deposition rate decreases with increasing inhibitor concentration. However, at high heptane volume fraction, inhibitor can increase the deposition rate, particularly when used in high concentration. At high heptane volume fraction, inhibitor addition alters the morphology of the deposit from that consisting of large flocculent aggregates to that consisting of smaller, submicrometer aggregates. This is consistent with the finding that inhibitor acts as an anti-agglomerant and prevents the formation of large aggregates in the bulk liquid. This paper shows that the impact of inhibitor addition depends on the environmental conditions encountered and the degree of destabilisation of the asphaltenes. Where inhibitor addition alters the nature of depositing species from large flocculent aggregates to smaller submicrometer aggregates, an increase in deposition rate may be observed.

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Experimental investigation of the inhibitory behavior of metal oxides nanoparticles on asphaltene precipitation

Shojaati

Riazi

Mousavi

et al. 2017

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Anionic surfactant for the dispersion of the asphaltenes in porous media

Cited by 7 publications

References 3 publications

Effects of Iron(III) Dodecylbenzenesulfonate on the Slurry-Phase Hydrocracking of Venezuela Fuel Oil with an Oil-Soluble Mo Catalyst

Effects of Iron(III) Dodecylbenzenesulfonate on the Slurry-Phase Hydrocracking of Venezuela Fuel Oil with an Oil-Soluble Mo Catalyst

Mechanism of an asphaltene inhibitor in different depositing environments: Influence of colloid stability

Experimental investigation of the inhibitory behavior of metal oxides nanoparticles on asphaltene precipitation

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